STEVENS PASS, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(458089) STEVENS PASS
From Year=1939 To Year=1994
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1286 1076 1069 875 710 490 290 293 441 729 1053 1239 9549
60 1131 935 914 725 556 347 167 169 298 574 903 1084 7801
57 1038 850 821 635 464 267 109 108 222 482 813 991 6799
55 976 794 759 576 405 218 78 75 177 422 753 929 6159
50 821 652 604 427 265 114 26 22 86 279 603 774 4671
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu